介绍
Component 类 是一个非菜单用户界面控件，是AWT一个抽象基类。组件表示图形表示的对象。
类的声明
以下是声明的java.awt.Component类：
public abstract class Component extends Object implements ImageObserver, MenuContainer, Serializable
字段域
以下是 java.awt.Component 类的字段:
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static float BOTTOM_ALIGNMENT -- 易于使用的常数getAlignmentY.
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static float CENTER_ALIGNMENT -- 易于使用的常数 getAlignmentY 和 getAlignmentX。
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static float LEFT_ALIGNMENT -- 易于使用常数getAlignmentX。
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static float RIGHT_ALIGNMENT -- 易于使用常数getAlignmentX。
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static float TOP_ALIGNMENT -- 易于使用的常数 getAlignmentY().
类的构造函数
| S.N. | 构造函数与说明 |
|---|---|
| 1 |
protected Component() 这将创建一个新的组件。 |
类方法
| S.N. | 方法和说明 | |
|---|---|---|
| 1 |
boolean action(Event evt, Object what) Deprecated. As of JDK version 1.1, should register this component as ActionListener on component which fires action events. |
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| 2 |
void add(PopupMenu popup) Adds the specified popup menu to the component. |
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| 3 |
void addComponentListener(ComponentListener l) Adds the specified component listener to receive component events from this component. |
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| 4 |
void addFocusListener(FocusListener l) Adds the specified focus listener to receive focus events from this component when this component gains input focus. |
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| 5 |
void addHierarchyBoundsListener(HierarchyBoundsListener l) Adds the specified hierarchy bounds listener to receive hierarchy bounds events from this component when the hierarchy to which this container belongs changes. |
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| 6 |
void addHierarchyListener(HierarchyListener l) Adds the specified hierarchy listener to receive hierarchy changed events from this component when the hierarchy to which this container belongs changes. |
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| 7 |
void addInputMethodListener(InputMethodListener l) Adds the specified input method listener to receive input method events from this component. |
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| 8 |
void addKeyListener(KeyListener l) Adds the specified key listener to receive key events from this component. |
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| 9 |
void addMouseListener(MouseListener l) Adds the specified mouse listener to receive mouse events from this component. |
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| 10 |
void addMouseMotionListener(MouseMotionListener l) Adds the specified mouse motion listener to receive mouse motion events from this component. |
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| 11 |
void addMouseWheelListener(MouseWheelListener l) Adds the specified mouse wheel listener to receive mouse wheel events from this component. |
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| 12 |
void addNotify() Makes this Component displayable by connecting it to a native screen resource. |
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| 13 |
void addPropertyChangeListener(PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list. |
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| 14 |
void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list for a specific property. |
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| 15 |
void applyComponentOrientation(ComponentOrientation orientation) Sets the ComponentOrientation property of this component and all components contained within it. |
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| 16 |
boolean areFocusTraversalKeysSet(int id) Returns whether the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Component. |
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| 17 |
int checkImage(Image image, ImageObserver observer) Returns the status of the construction of a screen representation of the specified image. |
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| 18 |
int checkImage(Image image,int width,int height, ImageObserver observer) Returns the status of the construction of a screen representation of the specified image. |
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| 19 |
boolean contains(int x,int y) Checks whether this component "contains" the specified point, where x and y are defined to be relative to the coordinate system of this component. |
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| 20 |
boolean contains(Point p) Checks whether this component "contains" the specified point, where the point's x and y coordinates are defined to be relative to the coordinate system of this component. |
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| 21 |
Image createImage(ImageProducer producer) Creates an image from the specified image producer. |
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| 22 |
Image createImage(int width,int height) Creates an off-screen drawable image to be used for double buffering. |
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| 23 |
VolatileImage createVolatileImage(int width,int height) Creates a volatile off-screen drawable image to be used for double buffering. |
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| 24 |
VolatileImage createVolatileImage(int width,int height, ImageCapabilities caps) Creates a volatile off-screen drawable image, with the given capabilities. |
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| 25 |
void deliverEvent(Event e) Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent e). |
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| 26 |
void disable() Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean). |
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| 27 |
protected void disableEvents(long eventsToDisable) Disables the events defined by the specified event mask parameter from being delivered to this component. |
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| 28 |
void dispatchEvent(AWTEvent e) Dispatches an event to this component or one of its sub components. |
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| 29 |
void doLayout() Prompts the layout manager to lay out this component. |
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| 30 |
void enable() Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean). |
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| 31 |
void enable(boolean b) Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean). |
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| 32 |
protected void enableEvents(long eventsToEnable) Enables the events defined by the specified event mask parameter to be delivered to this component. |
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| 33 |
void enableInputMethods(boolean enable) Enables or disables input method support for this component. |
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| 34 |
protected void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) Support for reporting bound property changes for boolean properties. |
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| 35 |
void firePropertyChange(String propertyName, byte oldValue, byte newValue) Reports a bound property change. |
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| 36 |
void firePropertyChange(String propertyName, char oldValue, char newValue) Reports a bound property change. |
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| 37 |
void firePropertyChange(String propertyName, double oldValue, double newValue) Reports a bound property change. |
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| 38 |
void firePropertyChange(String propertyName, float oldValue, float newValue) Reports a bound property change. |
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| 39 |
void firePropertyChange(String propertyName, long oldValue, long newValue) Reports a bound property change. |
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| 40 |
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) Support for reporting bound property changes for Object properties. |
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| 41 |
void firePropertyChange(String propertyName, short oldValue, short newValue) Reports a bound property change. |
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| 42 |
AccessibleContext getAccessibleContext() Gets the AccessibleContext associated with this Component. |
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| 43 |
float getAlignmentX() Returns the alignment along the x axis. |
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| 44 |
float getAlignmentY() Returns the alignment along the y axis. |
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| 45 |
Color getBackground() Gets the background color of this component. |
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| 46 |
int getBaseline(int width,int height) Returns the baseline. |
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| 47 |
Component.BaselineResizeBehavior getBaselineResizeBehavior() Returns an enum indicating how the baseline of the component changes as the size changes. |
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| 48 |
Rectangle getBounds() Gets the bounds of this component in the form of a Rectangle object. |
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| 49 |
Rectangle getBounds(Rectangle rv) Stores the bounds of this component into return value rv and return rv. |
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| 50 |
ColorModel getColorModel() Gets the instance of ColorModel used to display the component on the output device. |
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| 51 |
Component getComponentAt(int x,int y) Determines if this component or one of its immediate subcomponents contains the (x, y) location, and if so, returns the containing component. |
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| 52 |
Component getComponentAt(Point p) Returns the component or subcomponent that contains the specified point. |
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| 53 |
ComponentListener[] getComponentListeners() Returns an array of all the component listeners registered on this component. |
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| 54 |
ComponentOrientation getComponentOrientation() Retrieves the language-sensitive orientation that is to be used to order the elements or text within this component. |
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| 55 |
Cursor getCursor() Gets the cursor set in the component. |
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| 56 |
DropTarget getDropTarget() Gets the DropTarget associated with this Component. |
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| 57 |
Container getFocusCycleRootAncestor() Returns the Container which is the focus cycle root of this Component's focus traversal cycle. |
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| 58 |
FocusListener[] getFocusListeners() Returns an array of all the focus listeners registered on this component. |
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| 59 |
Set<AWTKeyStroke> getFocusTraversalKeys(int id) Returns the Set of focus traversal keys for a given traversal operation for this Component. |
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| 60 |
boolean getFocusTraversalKeysEnabled() Returns whether focus traversal keys are enabled for this Component. |
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| 61 |
Font getFont() Gets the font of this component. |
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| 62 |
FontMetrics getFontMetrics(Font font) Gets the font metrics for the specified font. |
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| 63 |
Color getForeground() Gets the foreground color of this component. |
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| 64 |
Graphics getGraphics() Creates a graphics context for this component. |
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| 65 |
GraphicsConfiguration getGraphicsConfiguration() Gets the GraphicsConfiguration associated with this Component. |
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| 66 |
int getHeight() Returns the current height of this component. |
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| 67 |
HierarchyBoundsListener[] getHierarchyBoundsListeners() Returns an array of all the hierarchy bounds listeners registered on this component. |
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| 68 |
HierarchyListener[] getHierarchyListeners() Returns an array of all the hierarchy listeners registered on this component. |
|
| 69 | boolean getIgnoreRepaint() | |
| 70 |
InputContext getInputContext() Gets the input context used by this component for handling the communication with input methods when text is entered in this component. |
|
| 71 |
InputMethodListener[] getInputMethodListeners() Returns an array of all the input method listeners registered on this component. |
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| 72 |
InputMethodRequests getInputMethodRequests() Gets the input method request handler which supports requests from input methods for this component. |
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| 73 |
KeyListener[] getKeyListeners() Returns an array of all the key listeners registered on this component. |
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| 74 |
<T extends EventListener> T[] getListeners(Class<T> listenerType) Returns an array of all the objects currently registered as FooListeners upon this Component. |
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| 75 |
Locale getLocale() Gets the locale of this component. |
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| 76 |
Point getLocation() Gets the location of this component in the form of a point specifying the component's top-left corner. |
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| 77 |
Point getLocation(Point rv) Stores the x,y origin of this component into return value rv and return rv. |
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| 78 |
Point getLocationOnScreen() Gets the location of this component in the form of a point specifying the component's top-left corner in the screen's coordinate space. |
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| 79 |
Dimension getMaximumSize() Gets the maximum size of this component. |
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| 80 |
Dimension getMinimumSize() Gets the mininimum size of this component. |
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| 81 |
MouseListener[] getMouseListeners() Returns an array of all the mouse listeners registered on this component. |
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| 82 |
MouseMotionListener[] getMouseMotionListeners() Returns an array of all the mouse motion listeners registered on this component. |
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| 83 |
Point getMousePosition() Returns the position of the mouse pointer in this Component's coordinate space if the Component is directly under the mouse pointer, otherwise returns null. |
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| 84 |
MouseWheelListener[] getMouseWheelListeners() Returns an array of all the mouse wheel listeners registered on this component. |
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| 85 |
String getName() Gets the name of the component. |
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| 86 |
Container getParent() Gets the parent of this component. |
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| 87 | java.awt.peer.ComponentPeer getPeer() Deprecated. As of JDK version 1.1, programs should not directly manipulate peers; replaced by boolean isDisplayable(). | |
| 88 |
Dimension getPreferredSize() Gets the preferred size of this component. |
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| 89 |
PropertyChangeListener[] getPropertyChangeListeners() Returns an array of all the property change listeners registered on this component. |
|
| 90 |
PropertyChangeListener[] getPropertyChangeListeners(String propertyName) Returns an array of all the listeners which have been associated with the named property. |
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| 91 |
Dimension getSize() Returns the size of this component in the form of a Dimension object. |
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| 92 | Dimension getSize(Dimension rv)Stores the width/height of this component into return value rv and return rv. | |
| 93 |
Toolkit getToolkit() Gets the toolkit of this component. |
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| 94 |
Object getTreeLock() Gets this component's locking object (the object that owns the thread sychronization monitor) for AWT component-tree and layout operations. |
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| 95 |
int getWidth() Returns the current width of this component. |
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| 96 |
int getX() Returns the current x coordinate of the components origin. |
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| 97 |
int getY() Returns the current y coordinate of the components origin. |
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| 98 |
boolean gotFocus(Event evt, Object what) Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent) . |
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| 99 |
boolean handleEvent(Event evt) Deprecated. As of JDK version 1.1 replaced by processEvent(AWTEvent). |
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| 100 |
boolean hasFocus() Returns true if this Component is the focus owner. |
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| 101 |
void hide() Deprecated. As of JDK version 1.1, replaced by setVisible(boolean). |
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| 102 |
boolean imageUpdate(Image img,int infoflags,int x,int y,int w,int h) Repaints the component when the image has changed. |
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| 103 |
boolean inside(int x,int y) Deprecated. As of JDK version 1.1, replaced by contains(int, int). |
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| 104 |
void invalidate() Invalidates this component. |
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| 105 |
boolean isBackgroundSet() Returns whether the background color has been explicitly set for this Component. |
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| 106 |
boolean isCursorSet() Returns whether the cursor has been explicitly set for this Component. |
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| 107 |
boolean isDisplayable() Determines whether this component is displayable. |
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| 108 |
boolean isDoubleBuffered() Returns true if this component is painted to an offscreen image (buffer) that's copied to the screen later. |
|
| 109 |
boolean isEnabled() Determines whether this component is enabled. |
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| 110 |
boolean isFocusable() Returns whether this Component can be focused. |
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| 111 |
boolean isFocusCycleRoot(Container container) Returns whether the specified Container is the focus cycle root of this Component's focus traversal cycle. |
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| 112 |
boolean isFocusOwner() Returns true if this Component is the focus owner. |
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| 113 |
boolean isFocusTraversable() Deprecated. As of 1.4, replaced by isFocusable(). |
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| 114 |
boolean isFontSet() Returns whether the font has been explicitly set for this Component. |
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| 115 |
boolean isForegroundSet() Returns whether the foreground color has been explicitly set for this Component. |
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| 116 |
boolean isLightweight() A lightweight component doesn't have a native toolkit peer. |
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| 117 |
boolean isMaximumSizeSet() Returns true if the maximum size has been set to a non-null value otherwise returns false. |
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| 118 |
boolean isMinimumSizeSet() Returns whether or not setMinimumSize has been invoked with a non-null value. |
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| 119 |
boolean isOpaque() Returns true if this component is completely opaque, returns false by default. |
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| 120 |
boolean isPreferredSizeSet() Returns true if the preferred size has been set to a non-null value otherwise returns false. |
|
| 121 |
boolean isShowing() Determines whether this component is showing on screen. |
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| 122 |
boolean isValid() Determines whether this component is valid. |
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| 123 |
boolean isVisible() Determines whether this component should be visible when its parent is visible. |
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| 124 |
boolean keyDown(Event evt,int key) Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent). |
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| 125 |
boolean keyUp(Event evt,int key) Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent). |
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| 126 |
void layout() Deprecated. As of JDK version 1.1, replaced by doLayout(). |
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| 127 |
void list() Prints a listing of this component to the standard system output stream System.out. |
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| 128 |
void list(PrintStream out) Prints a listing of this component to the specified output stream. |
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| 129 |
void list(PrintStream out,int indent) Prints out a list, starting at the specified indentation, to the specified print stream. |
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| 130 |
void list(PrintWriter out) Prints a listing to the specified print writer. |
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| 131 |
void list(PrintWriter out,int indent) Prints out a list, starting at the specified indentation, to the specified print writer. |
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| 132 |
Component locate(int x,int y) Deprecated. As of JDK version 1.1, replaced by getComponentAt(int, int). |
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| 133 |
Point location() Deprecated. As of JDK version 1.1, replaced by getLocation(). |
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| 134 |
boolean lostFocus(Event evt, Object what) Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent). |
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| 135 |
boolean mouseDown(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent). |
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| 136 |
boolean mouseDrag(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent). |
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| 137 |
boolean mouseEnter(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent). |
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| 138 |
boolean mouseExit(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).. |
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| 139 |
boolean mouseMove(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).. |
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| 140 |
boolean mouseUp(Event evt,int x,int y) Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent). |
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| 141 |
void move(int x,int y) Deprecated. As of JDK version 1.1, replaced by setLocation(int, int). |
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| 142 |
void nextFocus() Deprecated. As of JDK version 1.1, replaced by transferFocus(). |
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| 143 |
void paint(Graphics g) Paints this component. |
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| 144 |
void paintAll(Graphics g) Paints this component and all of its subcomponents. |
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| 145 |
boolean postEvent(Event e) Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent). |
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| 146 |
boolean prepareImage(Image image,int width,int height, ImageObserver observer) Prepares an image for rendering on this component at the specified width and height. |
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| 147 |
void print(Graphics g) Prints this component. |
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| 148 |
void printAll(Graphics g) Prints this component and all of its subcomponents. |
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| 149 |
protectedvoid processComponentEvent(ComponentEvent e) Processes component events occurring on this component by dispatching them to any registered ComponentListener objects. |
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| 150 |
protected void processEvent(AWTEvent e) Processes events occurring on this component. |
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| 151 |
protected void processFocusEvent(FocusEvent e) Processes focus events occurring on this component by dispatching them to any registered FocusListener objects. |
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| 152 |
protected void processHierarchyBoundsEvent(HierarchyEvent e) Processes hierarchy bounds events occurring on this component by dispatching them to any registered HierarchyBoundsListener objects. |
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| 153 |
protected void processHierarchyEvent(HierarchyEvent e) Processes hierarchy events occurring on this component by dispatching them to any registered HierarchyListener objects. |
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| 154 |
protectedvoid processInputMethodEvent(InputMethodEvent e) Processes input method events occurring on this component by dispatching them to any registered InputMethodListener objects. |
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| 155 |
protected void processKeyEvent(KeyEvent e) Processes key events occurring on this component by dispatching them to any registered KeyListener objects. |
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| 156 |
protected void processMouseEvent(MouseEvent e) Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects. |
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| 157 |
protected void processMouseMotionEvent(MouseEvent e) Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects. |
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| 158 |
protected void processMouseWheelEvent(MouseWheelEvent e) Processes mouse wheel events occurring on this component by dispatching them to any registered MouseWheelListener objects. |
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| 159 |
void remove(MenuComponent popup) Removes the specified popup menu from the component. |
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| 160 |
void removeComponentListener(ComponentListener l) Removes the specified component listener so that it no longer receives component events from this component. |
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| 161 |
void removeFocusListener(FocusListener l) Removes the specified focus listener so that it no longer receives focus events from this component. |
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| 162 |
void removeHierarchyBoundsListener(HierarchyBoundsListener l) Removes the specified hierarchy bounds listener so that it no longer receives hierarchy bounds events from this component. |
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| 163 |
void removeHierarchyListener(HierarchyListener l) Removes the specified hierarchy listener so that it no longer receives hierarchy changed events from this component. |
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| 164 |
void removeInputMethodListener(InputMethodListener l) Removes the specified input method listener so that it no longer receives input method events from this component. |
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| 165 |
void removeKeyListener(KeyListener l) Removes the specified key listener so that it no longer receives key events from this component. |
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| 166 |
void removeMouseListener(MouseListener l) Removes the specified mouse listener so that it no longer receives mouse events from this component. |
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| 167 |
void removeMouseMotionListener(MouseMotionListener l) Removes the specified mouse motion listener so that it no longer receives mouse motion events from this component. |
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| 168 |
void removeMouseWheelListener(MouseWheelListener l) Removes the specified mouse wheel listener so that it no longer receives mouse wheel events from this component. |
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| 169 |
void removeNotify() Makes this Component undisplayable by destroying it native screen resource. |
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| 170 |
void removePropertyChangeListener(PropertyChangeListener listener) Removes a PropertyChangeListener from the listener list. |
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| 171 |
void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) Removes a PropertyChangeListener from the listener list for a specific property. |
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| 172 |
void repaint() Repaints this component. |
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| 173 |
void repaint(int x,int y,int width,int height) Repaints the specified rectangle of this component. |
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| 174 |
void repaint(long tm) Repaints the component. |
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| 175 |
void repaint(long tm,int x,int y,int width,int height) Repaints the specified rectangle of this component within tm milliseconds. |
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| 176 |
void requestFocus() Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. |
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| 177 |
protected boolean requestFocus(boolean temporary) Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. |
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| 178 |
boolean requestFocusInWindow() Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. |
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| 179 |
protected boolean requestFocusInWindow(boolean temporary) Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. |
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| 180 |
void reshape(int x,int y,int width,int height) Deprecated. As of JDK version 1.1, replaced by setBounds(int, int, int, int). |
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| 181 |
void resize(Dimension d) Deprecated. As of JDK version 1.1, replaced by setSize(Dimension). |
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| 182 |
void resize(int width,int height) Deprecated. As of JDK version 1.1, replaced by setSize(int, int). |
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| 183 |
void setBackground(Color c) Sets the background color of this component. |
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| 184 |
void setBounds(int x,int y,int width,int height) Moves and resizes this component. |
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| 185 |
void setBounds(Rectangle r) Moves and resizes this component to conform to the new bounding rectangle r. |
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| 186 |
void setComponentOrientation(ComponentOrientation o) Sets the language-sensitive orientation that is to be used to order the elements or text within this component. |
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| 187 |
void setCursor(Cursor cursor) Sets the cursor image to the specified cursor. |
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| 188 |
void setDropTarget(DropTarget dt) Associate a DropTarget with this component. |
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| 189 |
void setEnabled(boolean b) Enables or disables this component, depending on the value of the parameter b. |
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| 190 |
void setFocusable(boolean focusable) Sets the focusable state of this Component to the specified value. |
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| 191 |
void setFocusTraversalKeys(int id, Set<? extends AWTKeyStroke> keystrokes) Sets the focus traversal keys for a given traversal operation for this Component. |
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| 192 |
void setFocusTraversalKeysEnabled(boolean focusTraversalKeysEnabled) Sets whether focus traversal keys are enabled for this Component. |
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| 193 |
void setFont(Font f) Sets the font of this component. |
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| 194 |
void setForeground(Color c) Sets the foreground color of this component. |
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| 195 |
void setIgnoreRepaint(boolean ignoreRepaint) Sets whether or not paint messages received from the operating system should be ignored. |
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| 196 |
void setLocale(Locale l) Sets the locale of this component. |
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| 197 |
void setLocation(int x,int y) Moves this component to a new location. |
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| 198 |
void setLocation(Point p) Moves this component to a new location. |
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| 199 |
void setMaximumSize(Dimension maximumSize) Sets the maximum size of this component to a constant value. |
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| 200 |
void setMinimumSize(Dimension minimumSize) Sets the minimum size of this component to a constant value. |
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| 201 |
void setName(String name) Sets the name of the component to the specified string. |
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| 202 |
void setPreferredSize(Dimension preferredSize) Sets the preferred size of this component to a constant value. |
|
| 203 |
void setSize(Dimension d) Resizes this component so that it has width d.width and height d.height. |
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| 204 |
void setSize(int width,int height) Resizes this component so that it has width width and height height. |
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| 205 |
void setVisible(boolean b) Shows or hides this component depending on the value of parameter b. |
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| 206 |
void show() Deprecated. As of JDK version 1.1, replaced by setVisible(boolean). |
|
| 207 |
void show(boolean b) Deprecated. As of JDK version 1.1, replaced by setVisible(boolean). |
|
| 208 |
Dimension size() Deprecated. As of JDK version 1.1, replaced by getSize(). |
|
| 209 |
String toString() Returns a string representation of this component and its values. |
|
| 210 |
void transferFocus() Transfers the focus to the next component, as though this Component were the focus owner. |
|
| 211 |
void transferFocusBackward() Transfers the focus to the previous component, as though this Component were the focus owner. |
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| 212 |
void transferFocusUpCycle() Transfers the focus up one focus traversal cycle. |
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| 213 |
void update(Graphics g) Updates this component. |
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| 214 |
void validate() Ensures that this component has a valid layout. |
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| 215 |
Rectangle bounds() Deprecated. As of JDK version 1.1, replaced by getBounds(). |
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| 216 |
protected AWTEvent coalesceEvents(AWTEvent existingEvent, AWTEvent newEvent) Potentially coalesce an event being posted with an existing event. |
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| 217 |
protected String paramString() Returns a string representing the state of this component. |
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| 218 |
protected void firePropertyChange(String propertyName,int oldValue,int newValue) Support for reporting bound property changes for integer properties. |
|
| 219 |
Dimension preferredSize() Deprecated. As of JDK version 1.1, replaced by getPreferredSize(). |
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| 220 |
boolean prepareImage(Image image, ImageObserver observer) Prepares an image for rendering on this component. |
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| 221 |
Dimension minimumSize() Deprecated. As of JDK version 1.1, replaced by getMinimumSize(). |
继承的方法
这个类继承的方法从以下类：
-
java.lang.Object
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